.::: Install/Upgrade Minimal to Desktop Environment on Centos/RHEL(Redhat Enterprise Linux ) :::.

1. List Installed and Available Groups
[root@TeguhLab ~]# yum grouplist
Loaded plugins: fastestmirror
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Loading mirror speeds from cached hostfile
 * base: sumberterbuka.beritagar.id
 * extras: sumberterbuka.beritagar.id
 * updates: sumberterbuka.beritagar.id
Available environment groups:
   Minimal Install
   Compute Node
   Infrastructure Server
   File and Print Server
   Basic Web Server
   Virtualization Host
   Server with GUI
   GNOME Desktop
   KDE Plasma Workspaces
   Development and Creative Workstation
Available Groups:
   Compatibility Libraries
   Console Internet Tools
   Development Tools
   Graphical Administration Tools
   Legacy UNIX Compatibility
   Scientific Support
   Security Tools
   Smart Card Support
   System Administration Tools
   System Management
Done
[root@TeguhLab ~]# cat /etc/redhat-release
CentOS Linux release 7.1.1503 (Core)
[root@TeguhLab ~]#
[root@TeguhLab ~]# startx
-bash: startx: command not found
[root@TeguhLab ~]#

2. List Packages in a Group
 # yum groupinfo "GNOME Desktop"
[root@TeguhLab ~]# yum groupinfo "GNOME Desktop"
Loaded plugins: fastestmirror
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Loading mirror speeds from cached hostfile
 * base: sumberterbuka.beritagar.id
 * extras: sumberterbuka.beritagar.id
 * updates: sumberterbuka.beritagar.id

Environment Group: GNOME Desktop
 Environment-Id: gnome-desktop-environment
 Description: GNOME is a highly intuitive and user friendly desktop environment.
 Mandatory Groups:
   +base
   +core
   +desktop-debugging
   +dial-up
   +directory-client
   +fonts
   +gnome-desktop
   +guest-agents
   +guest-desktop-agents
   +input-methods
   +internet-browser
   +java-platform
   +multimedia
   +network-file-system-client
   +networkmanager-submodules
   +print-client
   +x11
 Optional Groups:
   +backup-client
   +gnome-apps
   +internet-applications
   +legacy-x
   +office-suite
   +remote-desktop-clients
   +smart-card
[root@TeguhLab ~]#

3. Upgrade from Minimal installation to GNOME Desktop:
 # yum -y groupinstall "GNOME Desktop"

[root@TeguhLab ~]# yum -y groupinstall "GNOME Desktop"
Loaded plugins: fastestmirror
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Loading mirror speeds from cached hostfile
 * base: sumberterbuka.beritagar.id
 * extras: sumberterbuka.beritagar.id
 * updates: sumberterbuka.beritagar.id
Resolving Dependencies
--> Running transaction check
---> Package ModemManager.x86_64 0:1.6.0-2.el7 will be installed
--> Processing Dependency: ModemManager-glib(x86-64) = 1.6.0-2.el7 for package: ModemManager-1.6.0-2.el7.x86_64
--> Processing Dependency: libqmi-utils for package: ModemManager-1.6.0-2.el7.x86_64
..............................................................
 Replaced:
  NetworkManager.x86_64 1:1.0.0-14.git20150121.b4ea599c.el7               pygobject3-base.x86_64 0:3.8.2-6.el7            
  rdma.noarch 0:7.1_3.17-5.el7                                         

Complete!
[root@TeguhLab ~]#
4. Starting GNOME

$ startx
or
$ /sbin/telinit 5

To have CentOS boot into runlevel 5 “X11” instead of runlevel 3 “Full multiuser mode”, modify the /etc/inittab file to change start up level from
id:3:initdefault:
to
id:5:initdefault:

[root@TeguhLab ~]# startx
hostname: Name or service not known
xauth:  file /root/.serverauth.5364 does not exist
xauth:  file /root/.Xauthority does not exist
xauth:  file /root/.Xauthority does not exist


X.Org X Server 1.19.3
Release Date: 2017-03-15
X Protocol Version 11, Revision 0
Build Operating System:  3.10.0-514.16.1.el7.x86_64
Current Operating System: Linux TeguhLab 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=UUID=fa73217f-e158-471b-bea0-ab9538335ae3 ro crashkernel=auto rhgb quiet LANG=en_US.UTF-8
Build Date: 05 August 2017  06:19:43AM
Build ID: xorg-x11-server 1.19.3-11.el7
Current version of pixman: 0.34.0
    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Sep 25 16:12:10 2017
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
VMware: No 3D enabled (0, Success).
touch: cannot touch ‘/root/.cache/imsettings/log’: No such file or directory

5. Now you can login Server using Desktop
[root@TeguhLab ~]# ifconfig -a
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.10.10.10  netmask 255.255.255.0  broadcast 10.10.10.255
        inet6 fe80::20c:29ff:fe98:95ed  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:98:95:ed  txqueuelen 1000  (Ethernet)
        RX packets 735920  bytes 1066519730 (1017.1 MiB)
        RX errors 0  dropped 60  overruns 0  frame 0
        TX packets 405306  bytes 32564163 (31.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 16  bytes 960 (960.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 16  bytes 960 (960.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@TeguhLab ~]#

6. Install vncserver if needed
[root@TeguhLab ~]# yum -y install tigervnc-server
 go to Enable VNC server on linux